2x 5 9 6 x 3 July 8, 2019 16 32 64 128 2x 5 6 x 2 9 x 3 4 2x (- 6 4 x 5 9 )- 3 5 2x 6 3 x 2 9 Solve 2x 5 6 x 2 9 x 3 4 3 2x 5 )= 6 x 1 )- 9 5 2x 6 và 3 x 2 9 2x 5 2 x 2 5 2x 9
